#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int add(int x, int y)
{
	int z = 0;
	z = x + y;
	return z;
}
int main()
{
	int a = 10;
	int b = 20;
	int c = 0;
	c = add(b, c);
	return 0;
}